Locking and signaling system for telephone-registers.



A. s. sPlEGEL.

LOCKING MID SGNALNG SYSTEM EOP TELEPHONE REGISTERS.

APPLICATION MLB!) JUNE 1o, 1907,

` Efelte Gais. 26, 1909- ot'the answering plug of e cord circuit in vcertain n'iprovements in Locking and Sig- -nninner of meter control, however, 'some-l times proves objectionable because of the V'culty by providing 4means for rendering -or Whether it be common to the cordsofen nn'rrnn `snArEs PATENT ernten ALEXANDER s. SPIEGEL, or CHICAGO, ILLINOIS, nssronon 'ro AMERICAN 'rELE'rHoNE -eine TELEGEAPH ooMrANme conronn'rxon or NEW Yong.

' y .LocKINGANn SIGNALING sYsT'EM ron TELEPHONE-Enersrnns.

To all whom it magjcmwem:

Beit known that 'i I,` l ALEXANDER S.- SBIEGEL, residing'at Chicago', inthe county of Cook und State-of Illinois, have invented nailing Systems for Telephone-Registers, ot' which the following is e specification.

Central station meters employed in meesu'ring telephone service `are often so a1'- renged that they ure caused to register through the depressing of a lrey by an oper! eter, this being done only after the desired connection is actually made, so that unsuccesstul ,cellsv may not be recorded. This tendency of the operators to actuate the key more than once during a, single connection,` thus leading to an excess char e. The inventi'on herein set forth avoi s this diit' esch' meter incapable of operation a second time during,` the period of e single insertion the jack belonging tothe calling subscriber, whethersuid. meter be' associated with e line operators position. Moreover, my invention furnishes a system `of signals informing an operator both as to her own a'cts and their effect upon the meters. -f The appended drawing shows diagrammetically nnenibodiment of the invention in connection with n single cord circuit and a pair of substation lines,l of which only that calling needbe considered here. The connecting or cord ,circuit C, forming one ein group belonging to an operator/ at Y. a central station A, is a. standardform having talking strands L vL2 containing 4the usual repeating coil c, between 'the windings of 'which is bridged the oihce battery B with one pole grounded andrwith the' free pole `ioined to the third conductor La of the v cord by a conductor 10a. The answeiling plug P of the cord cooperates with answering jacks J, of which one isillustrated, this having joined to its tip and ring cortiets the two limbs L4 and L5 of a substation line and furnishing with seid plug n connecting switch. The customary line relay R governs the local circuit of the line lamp O. Connected to the thimble' of the jack by n third conductor 10 is the usual cut-oil relay E?, and in aconductor 11 extending between 1 Specieation'of Letters Patent.

I conductor 10 and i Patented Unt. 26,

Application filed June 10,1997. SerielNo 378,3()9.

oundis the high resistance Winding 12 o a, line meter- M, which., esI tov itsvregistering mechanism, may be of uny/ convenient type and upon which are to be recorded the' connections secured lfrom the substationof the line to which it is united.

ThisA metei` also'has'u low resisten/ce winding 13 'included' in. a conductor 14, normally open 'at' themeter armature 15 but placed l l in parallel with `the winding 12 Awhen the meter is energized.

Included in the answering side et the cord is u. register key or ycircuit closer K, serving upon its depression to bring the proper meters into play.` Contacts 7a la of this hey then separate the answering 'plug from the talkingvstrands L L2, and e contact 7s conipleteslthe circuit between the conductor L3 of the cord `and aconductor 16, lending through controlling` relaysl'3 and R4 associated with n suitubleposition Ymeter M2 to the tree pole of a grounded generator G or Some other source of electrical energy of considerably higher potentiel than the soul-re B. The position meter furnishes a record of the totalA number ot connections registered 'by the operator with Whose cords it is counected. The relay R3 is differentially wound, having one winding 17 in the conductor 16 in series `with the generator sind relay R,

lWhile the opposite Winding 18, preferably having e greater number ot turns than 17, is connected-to ground by a conductor 19 extendingv from conductor 16 at a pointbetween the 'generator and Winding 17 'end comprising the normally opentrontucontuct [of the armature' 2O of relay R". 'Aresistnnce v 21 is showninfthe. conductor 19 in series 18, this resistance 21 sind 95 with the windin v the resistance o `the other elements of the circuit having such values und the two Windings of relay R'Bbeing sc arrun `ed,thnt `When the armatures '15- nnd`20 o thel line meter and relayy R4., respectively, nre both ettracted the ampere-turns of said vviiidingsK will be approximately equal7 and since they' are oppositely Wound theireitect upon-the' relay willbe neutralized. l But vbefore thefermeture 15 brings in the lowgresistsnce Winding 13' of the lineimeter there will be en excess of currentthrough winding 1.8 the ditlerential relay, Whichfis therefore n nbalanced: and freevto operate.

As an example of conditfon's which have pvv ved successful in' practice, it muy be'snifll no erster G, 34 m38 vol/ts. v

The energizlng coil of the position meter is 1n branch conductor 22 joined to the' conductor 16 in parallel with the Winding 1'4 ot relsy R3, this portion of the circuit beling'normally open at the 'front contact el:

.of the line meter brings the low resish'xnearmature 23 of relay R3.' `Upon its beck 1 Contact this armature completes n. conductor 24e leerling to conductor 19 between seiii reley :incl the armature 2O of relay Re" and con taining sonic such signal device as s lmnp U2 of distinctive color, es, tor example, Meter M2 when energized completes by its s-rinstnre 25a local circuit 9.5, conto K 'battery 1,2 and s second lmnp or signal flevice @sof s different color 'from thelimip @2,

When in response te the illumination 0i? the line lamp the operator inserts the plug' P in jeclr .2 current flows 'iro-in thehotthrough the 'third coiiiduetor ol the corel, sleeve of the plug thiinble of the jsclr snel vcenelnetors 10 end 11 to ground through both the ent-off relay` lli-2 enel the *.vining; 1E?. of the line meter Ivi. The relay is thereby energized to disconnect relay lt from. the line, but en i'iceount of the resistsnce of the Winding. 12 the current delivered by the oiiice battery is insiiiiicient te reuse the' .line :meter to attriict itsnrrne-Lnre. 'litter securi' the line Wanted, to. produce* a.A registration of the connection, the operator depresses thev key K. This completes a circuit from the generator Gr to gronnel by 4Way ot conflnetor 16, winding; l? of relay enti Winding of relay R, concl'ucter L3, coperateonteets ofthe `plug' and jack, conclueters 10 enel 11 and Winding 12 of the line meter, in spite ot' the resistance et the cir-- cuit generator potentiel ,gives enough current to energize the line meter end also reiays 13.*, enti the armature of relay R3 ciones the branch 22 containingA the position meter, but this ees not receive current enough to operate it 'until the armatore 15 winc'linf,r 13 in parallel with its high res ence Winding 12. The consequent,refinctio in the resistance of theeircuit so augmente current through the conductor 22 that the position meter operates, :mtl at the sinne time closes the cire-nit lighting: the red lamp @3. The operetoiseeiw essere ,ent upon the Wimling;- 17 noting filone to energize iii-,since if relay R4 first brought into circuit at its armature 2O the Winding 18, R3 is still unbalanced and acts ns previouslyv described until armature 15 of the line' meter has also been attracted.

After the operator has releasedthe key, openingjthe Contact 7a2, the' line ineterreinainsloclrecl upv is long as the answering lplug is in the jack by current from battery B over conductors 10% L3, 10 and I1l, for While this was not greet enough to omiso the drawing up ofthe armature. it will retain it when once attracted. The position meter. however, together with the relays R and-l2. are denergizcthso that this meter could again be operated upon the some connection by a second depression ot the key vWere it not for the feet that thefreduction' of resistance of tne circuit produced and ineintained at the line meter new makes the ivinrlinzg's 17 and 18 equivalent to .one aneth-er, and in conseqiience of .their differentis-.l relation the :n'iniitnre 23 is not attracted and the position meter else remains iining' all or the registering apparatus to its initial condition. ln this Way all possibility of the duplicating through error of theregistrstion of r. single connection is obviated. Furthermore, if the opei'ziior does subsequently press key 'llorthe sinne cell she will be made mirare/oi the mistake by the lighting of the green lmnp 02. This, since relay R3 remains inert While R4 is again actuated, receives current from the generirtor Gf throughconductor 16. nrnmtme QI-Sand itsback contact in relay l. conductors Q4- and 19 and armature 20 and its front Contact in relay lt* to ground. This is of especial utility in such Cases as rapidly succeeding calls coming from the seme substation. lfy the operator, upon` properly seeking to register e second call, sees the illumination of the green instead or refl lamp, she will ,know tliixt she has not produced the desired effect snol that the answeringeord must rst he Withflrmvn to release the meters. Hoving.; clone this and egsin'pressed the key K the' display or the red signal would, vas bciore, indicate the operation of both meters.

n addition to its use for measured service,

this invention muy be 'employed as an accurete cheek upon collections from ,substation coln-in-the-slot apparatus, the operator causing e swirls reliristrstxen by e meter or meters Having thus described ./'nfiy invention, I claiin: 'f 1. The combination with telephone lines and a connecting circuit therefor, of a plurality of meters operable during lthe connection of said circuit with a line, means soci'ated with the connecting circuit for starting -the operation of the meters... and means separate for each meter acting independently of the starting means for temporarily rendering inoperative all of the meters-involved in the registration of the connection.

2. In a telephone circuit, the combination with a registering apparatus, of controlling means provided with differential windings by which it. may be energized yto efiect the reiay ha ving differential windings and being operation of said registering apparatus, and resistance varying` means connected inv circuit with one of the windings vof the controlling nieansand rendered effective in i.eg

, istering a connection whereby a second registration of such connection is prevented.

3. In a measured service telephone 'ystein, the combination with a plurality 0 eters, of means having differential windings and being adapted to control oneof the meters, and resistance varying means governed by another of the ineters'and serving -to vary the distribution of current in the differential windings.

4. In a telephone circuit, the combination with a registering apparatus, of controlling means provided with differential windings by which it may be energized to effec-t the .operation of said registering apparatus, resistance varying means connected ,in circuit withk one df the windings o'f the controlling means and' operable to prevent the differential windifigs from operating the registering` apparatus, and a switch included in the circuit between the controlling means and the resistance varying means and adapted upon actuation to effect the operation of'said resistance-varying means.

A measured service telephone circuit comprising a registering apparatus provided with a. high and a low ,resistance winding, sources ot' electrical einer@7 of relatively high and low potential, means for connecting the high potential source to the high resistance winding to operate the registering apparatus, a second registering apparatus adapted to be .operated l'iycurrentfrom the high potential source,and means for :connecting the source of low potential to the'lowfrcsistance winding of the first-named registering apparatus, thereby establishing conditions to temporarily maintainl both registering appalratus against further operation, substantially as described. i

6. A measured service telephone lcircuit comprising a registering apparatus provided with a high and a 10W resistance winding,

sources of electrical energy of relatively high and low potential, means for connecting thc high potential source to the registering apparatus to Ieffect its operation. a second registering apparatus adapted to be operated by current from the high potential source. and means for connectingl the source of low potential to the high and low resistance windingsl in parallel of the fii'st1'iaiii al register ing apiiiai'at'us to tei'i'iporarily maintain both registering apparatus against 'further operation.

7. .l telephone system con'iprising a cere tral station and substation lines terminating thereat, a cord circuit at' the central station. a mete' associated with the cord circuit. a

adapted to control said meter. :i meter asso ciated with a line and being provided with :i plurality of: windings` said line nieter being in circuit with a winding ot' the relay when the line and cord are connected,.ai'id means for joining windings of the line meter in parallel.

8. The combination with a central station and telephone lines extending thereto, of apparatus for registering connections between 'said lines. a signal device, and means for displaying tlie signal only upon an attempt to produce a second registration for a single connection. l

9. In a central station telephone system. the 'combination with telephone lines and connectingineans therefoi',of' registering a pparatus undentbe control of an operator. a signal device, means for displaying said sig nal upon the first actuation of the register-v ing apparatus. a second signal device,and

CIK

means for displaying said second signal upon an attempt to again actuat-e the registering apparat-us during the same connection.

10. The combination with a conductingl circuit, of two relays, a meter controlledat the t'ront contact of the tirst relayand the actuationy of which meter is dependent upon cooperative action of both relays, a circuit closer upon the first actuation of which both relays are operated and the meter actuated, means 'for preventing operation ofthe first relay upon a. second actuation of the circuit closer, and a signal device controlled at the back of said first relay'and the fronteontact of the second relay, as and for the purnose. set forth.

In testimony Whereor, 'I have signedmy name to this specification in the presence of two subscribing Witnesses, this sixth day of June 1907.

ALEXANDER S. SPIEGEL.

Witnesses:

LEWIS S. EATQN, Ivon J nFrREYs. 

